Here's my problem.
http://gyazo.com/256f17e08c782e774f6458877afe7d2a
Around the heads are cubes with alpha textures, but these materials don't seem to be affected by the fog effect I'm trying to create in AE. Can anyone help me out? There are lots of materials in my scene like this so if there's a way to just turn this off somehow that would help me out a lot better.